Struct opentelemetry::metrics::ObservableCounter

pub struct ObservableCounter<T>(_);

Available on crate feature metrics only.

An async instrument that records increasing values.

Implementations

impl<T> ObservableCounter<T>

pub fn new(
    inner: Arc<dyn AsyncCounter<T> + Sync + Send + 'static>
) -> ObservableCounter<T>

Create a new observable counter.

impl<T> ObservableCounter<T>

pub fn observe(&self, cx: &Context, value: T, attributes: &[KeyValue])

Records an increment to the counter.

It is only valid to call this within a callback. If called outside of the registered callback it should have no effect on the instrument, and an error will be reported via the error handler.

Trait Implementations

impl<T> Debug for ObservableCounter<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl TryFrom<InstrumentBuilder<'_, ObservableCounter<f64>>> for ObservableCounter<f64>

type Error = MetricsError

The type returned in the event of a conversion error.

fn try_from(
    builder: InstrumentBuilder<'_, ObservableCounter<f64>>
) -> Result<ObservableCounter<f64>, <ObservableCounter<f64> as TryFrom<InstrumentBuilder<'_, ObservableCounter<f64>>>>::Error>

Performs the conversion.

impl TryFrom<InstrumentBuilder<'_, ObservableCounter<u64>>> for ObservableCounter<u64>

type Error = MetricsError

The type returned in the event of a conversion error.

fn try_from(
    builder: InstrumentBuilder<'_, ObservableCounter<u64>>
) -> Result<ObservableCounter<u64>, <ObservableCounter<u64> as TryFrom<InstrumentBuilder<'_, ObservableCounter<u64>>>>::Error>

Performs the conversion.